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(ModeL) J. H. BARNES & J. H. WOOLASTON.

LOOK.

No. 314,778. Patented Mar. 31, 1885.

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i V UNIT D TATEs {PATENT ooLAsrON, OF Nnw'aHAvnN, OONN, NUFAOTURI G OOMPA Y, or SAME LOCK.

SPECIFICATION forming part; of Letters Patent No. 314,773. dated March 31; ices.

Application filed October 27, 1884. (Modem I To all whom it may concern:

Be it known that we, JOHN H. BARNES and JOSEPH H. WooLAsroN, of New Haven, in the county of New Haven and State of Connecticut, have invented new Improvements in Locks; and we do hereby declare the following,when taken in connection with accompanying drawings and the letters of reference marked there. on, to be afull, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure l,a perspective view of the lock complete; Figs. 2and 3, an inside view of the lock, the covering-plate removed, in the two positions, respectively, of the bolt drawn and thrown; Fig. 4, a horizontal section through the cylinder, bolt, and tumblers; Fig. 5, aperspective view of the cylinder detached.

This invention relates to an improvement in looks, such as used for drawers and doors,and called drawer or cupboard. locks, and particularly to that class in which the bolt is thrown by a mechanism independent of or without the presence of the key, the object being to construct the lock with a cylinder within a, tube to receive the key, and which will revolve with the key to withdraw the bolt, the tube extending outside the front of the drawer or door to whichthe lock may be attached, and so that when the bolt is drawn and caught by a latch in the drawn position it may be released and thrown by the cylinder, independent of or without the employment of a key, and in such a construction of look as more fully hereinafter described and particularly recited in the claims my invention consists.

A represents the principal plate of the lock; B, the face-plate turned up therefrom; O, the inclosing-case made fast tothe plateA' in the usual manner; D, the bolt arranged to be moved out and in through the face-plate, as frorn'the position in Fig. 2 to that in Fig. 3 and return. The. bolt is provided with the usual tumblers, here represented as three, marked 1 2 3 in Fig. 4, and which are arranged so that when the bolt is thrown, as seen in Fig. 3, the tumblerswill fly beneath the tumblers are turnedto bring their re spective notches to register with the stud a,

into said notches, as in Fig. 2, and in the usual manner. I A i b is a latch hung upon the same pivot as the tumblers, and so as to swing in a plane paralthe stud a when the bolt is drawn, the latch forced so to do by its spring f, and when the latch is engaged with the bolt, as seen in Fig. 2, the bolt is held within the case of the look from its engagement with-the stud, as indi-. cated in broken lines, Fig. 2. When so dis-z engaged, the bolt is free to fly outward under the action of its spring and as seen in Fig. 8.

the case in its proper relation to the tumblers. It is constructed with a longitudinal groove, h, to receive the key. The groove is in one side of the cylinder, and so that the bit of thekey may project therefrom, as indicated at 2',

cut to correspond to the respective tumblers. The cylinder E is supported in the case in the usual manner, as seen in Fig. 4, taking a bean ing at the rear and also near the front. outside end is constructed in the form of a knob, Z, through which the groove of the keyhole extends. This knob, whenplacedupon the drawer or door, stands outside of its front face and so as to be conveniently reached by the thumb and finger. On the cylinder is a cam, m, the path of which is in the plane of the latch b, and so that as the cylinder is rotatedsay when the bolt is drawn as seen in Fig. 2the cam at will strike the latch b, as

force the latch to retreat to the posit-ion seen in broken lines, same figure, and so as to re latch and permit the bolt-spring g to act and throw the bolt, as seen in Fig. 3. The latch may then act as one of the tumblers to stand against the stud a, and from which it must a stud or shoulder, a, on the bolt; but when.

be removed before the bolt can bedrawn; or"

then the bolt may be drawnv and the stud pass lel therewith,its nose 6 arranged to catch overj until such time as the latch may be thrown I E is the'key-cylinder, which is arranged in broken lines, Fig. 2, the bit of the key being i The seen in broken lines, and the continued rota 5 tion of the cylinder will, through the can],

lease the bolt from its engageiiieut with the such an extent that the descentof the bolt will automatically force the latch to retreat, to permit the stud d to pass down into the notch of the tumblers.

To unlock the bolt the key is introduced, as seen in broken lines, Fig. 3, and turned in the usual'r'nanner. latch-bolt out of the path of the stud a,and the bit of the key will then act upon the tumblers in the usual manner, and draw the bolt. As the bolt is'drawn by the key, it passes inward slightly below the face of the plate B, as indicated in broken lines, Fig. 2-that is to say, the key gives to the bolt a little over-motion before it can escape from the gate n of the bolt. This movement takes the stud a the same distance below the shoulder of the latch, andso that so soon as the key passes from the gate n the bolt will be forced outward until the stud acomes against the shoulder of the latch, as indicated in Fig. 2. Thus arranged the key cannot be turned to throw the bolt, for the reason that the gate n has passed so far outward as toprevent the entrance of the key when turned toward the bolt. The key may then be withdrawn, and when it is desired to throw the bolt, the thumb and finger are applied to the knob Z of the cylinder and the cylinder turned, as before described, to turn the latch from its engagement with the bolt, and so as to permit the bolt to be thrown by its own spring, independent of the key, and to further prevent the throwing of the bolt while the key is in the cylinder, we make an extension, 1, from the bolt downward toward the cylinder and in the path of the key, should the cylinder be turned in the direction of unlocking when the key is in the cylinder, and so that the key, striking the extension 1", as indicated in broken lines,- Fig. 2, will prevent the turning of the cylinder in that-direction. By this arrangement, after the key has been introduced and employed to draw the bolt, and it be left in the cylinder, it is positive evidence that the bolt is not thrown.

The great advantage of this class of locks is.

the bolt before the bit of the key can escapefrom the gate, and then the bolt returned under the action of the spring, so as to prevent the return of the key into the gate, may be applied in other locks of this class-that is to say, locks provided with a device to catch the bolt when it is drawn and hold it so that the The cam in will throw the From the foregoing it will be understood that we do not claim, broadly, alatch arranged to engage the bolt in its drawn position combined with a device independent of the key by which the latch may be moved from its engagement with the bolt,- and so as to leave the bolt free to be thrown by its own spring.

' We are aware thata lock has been constructed with a cylinder through which the key enters the lock, and which cylinder rotates with the key, and that in such a look a latch has been provided to hold the bolt in its drawn posi tion to be disengaged by the cylinder; but in such construction the disengagement of the latch has been produced by a longitudinal movement of the cylinder, the rotative movement of the cylinder having no efiect upon the said latch; and we are also aware that a lock having a latch to engage the bolt in its drawn condition has been provided withacam with in the lock to disengage said latch; but it has been entirely independent of and separate from the key cylinder or guard. Wedo not wish to be understood as claiming either of Such constructions, the essential feature of this part of our invention being a cam on the cylinder adapted to engage said latch by a rotative movement of the cylinder; but

'What we do claim is a Y 1. The combination of the bolt and its spring with a latch, b, hung in the case, arrangedto engage a corresponding shoulder on the bolt when the bolt is drawn, a cylinder arranged in the case, the axis of which is at right angles to the plane'of the bolt, and constructed 7 to receive the key by which the bolt may be drawn, the said cylinder arranged for rotation both with and independent'of the key, and constructed with a radially-projecting cam, m, the path of which is in the plane of the said latch, substantially. as described, and whereby by the rotation of the .cylinder the latch will be moved out of engagement with the drawn bolt, substantially as described.

2. The combination of the bolt D, latch I), hung in the case to swing in a plane parallel with the plane of the bolt, the bolt constructed with a shoulder with which said latch may engage when the bolt is drawn, a spring arranged -to throw the said bolt when free,,a

cylinder arranged in the case, its axis at right M angles to the plane of the latch, and constructed with a groove, h, to receive thekey, the cylinder also constructed with a'cam, m, projecting radially therefrom, the pathof said cam in being in the plane of said latch, the bolt constructed with a gate, n, in such relation to with a shoulder with which said latch will engage, a cylinder arranged in the case, its axis at right angles to the plane of the latch, said ranged to throw the said bolt when free, a

cylinder arranged in the case, its axis at right angles to the plane of the latch, and constructed with a groove, h, to receive the key, the cylinder also constructed with a cam, m, projecting radially therefrom, the path of said cam at being in the plane of said latch, the bolt constructed with agate, a, in such relation to the key that the key will give to the bolt an over motion beyond the engagement of the bolt with the latch, the bolt also constructed with a projection, 9", toward the cylinder in the path of the key when the bolt is drawn, substantially as described.

5. In a lock, the combination of the bolt, constructed with a gate through which thekey works in drawing thebolt, the said gate terminating at a point distant from the face of the bolt less than the distance from the outer surface of the face-plate to the point where the bit of the key escapes from the gate, and whereby the key will draw the face of the bolt in side the surface of the face-plate, a spring in connection with the bolt, the tendency of which is to throw the bolt outward, a catch arranged to engage the bolt in its drawn condition, and when the face of the bolt is substantially flush with the surface of the face-plate said boltengaging device arranged to be thrown out of engagement independent of the key, substantially as described.

JOHN H. BARNES.

J OS. I-I, WVOOLASTON.

Witnesses: 7

WM. SOHRED, Jos. C. EARLE. 

